Premium Gas for 3rd gen

Taco Slinger 4000

Well-Known Member
I was told at the dealership that I should only use 91 or higher when filling up my truck? Is there any consequence to using a lower grade or higher grade like 93? Thanks
 
Unless you are a Premium Athlete , Running a US based fuel , Eat right , preform Correctly, win !
So Say you Eat a Big Ol Bowl of Sugar Wheats & you Peter out after the First 100 meters, you still showed up to the race right !
It's just the Big Ass Gas companies wanting Your Money ! Go with the cheap or mid grade nothing more , change your fuel filter every 60 k. If it bugs you that much ...
To heck with the Environment and the Air that " You " Breathe !
More Oxygen for The Obscenely over powerd vehicles in the US...
 
One station up here sells Premium.....5% Ethanol............. and 10% Ethanol.........tried all 3 and I'm gettin my best mileage with the 5% blend. It's .30 cents cheaper than the Premium @ $2.64/gal.
 
On a recent road trip I ran thru states that didn't have 87. 85 or 90something. Fuel was less than I was used to at home so I tried the higher octane. And the results: (drum roll please)...



There you have it.
 
On a recent road trip I ran thru states that didn't have 87. 85 or 90something. Fuel was less than I was used to at home so I tried the higher octane. And the results: (drum roll please)...



There you have it.

Exactly nothing. Even if its 100 octane, you wont notice a difference
BUT..... if lower octane than what’s required is used, you can start getting pre detonation ( ping or knocking sound). Could be bad if you keep running it
 
Exactly nothing. Even if its 100 octane, you wont notice a difference
BUT..... if lower octane than what’s required is used, you can start getting pre detonation ( ping or knocking sound). Could be bad if you keep running it

No chance I'd go under the recommended. Tried it and felt/saw/calculated no advantage
 
If it has boost (supercharger or turbo) or high compression heads go higher octane if not just run normal octane fuels. Mechanic tested common sense rulez here!
 
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